Similarity of joint Kinematics and Muscle Demands Between Elliptical Training and Walking: Implications for Practice
Similarity of joint Kinematics and Muscle Demands Between Elliptical Training and Walking: Implications for Practice
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DOI：
10.2522/ptj.20090033
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发表时间：
2010-02-01
期刊：
影响因子：
3.2
通讯作者：
Taylor, Adam
中科院分区：
文献类型：
--
作者：
Burnfield, Judith M.;Shu, Yu;Taylor, Adam
背景身体残疾的人在康复出院后往往面临恢复行走能力和健康的障碍。物理治疗师具有独特的优势，可以教授客户在社区中可用的功能相关设备上锻炼所需的知识和技能，例如椭圆训练机。然而，由于缺乏经验信息，治疗用途受到阻碍。本研究的目的是检查在步行和椭圆训练过程中记录的关节运动学和肌肉激活，以提供基于证据的数据来指导临床决策。这是一项前瞻性、对照实验室研究，采用重复测量设计。20名没有可能妨碍步态的损伤的成年人参加了研究。在熟悉程序后，受试者在4种椭圆装置上行走和训练，同时记录运动学、肌电图（EMG）和步幅特征数据。椭圆训练和步行之间的运动相似性得到了髋关节（0.85 - 0.89）、大腿（0.92 - 0.94）、膝关节（0.87 - 0.89）以及踝关节（0.57 - 0.71）相对较高的多重相关系数的证明。在椭圆训练中躯干、骨盆、髋关节和膝关节的屈曲明显大于步行。椭圆教练机最接近的模拟矢状面步行运动学，从关键变量的评估中确定。在椭圆训练中，臀大肌和股外侧肌的激活增加;内侧腘绳肌、腓肠肌、比目鱼肌和胫骨前肌的激活减少;臀中肌和外侧腘绳肌的激活与行走中这些肌肉的激活相比相对不变。根据肌电图的研究结果，没有椭圆机训练机显然是最好的模拟步态。到目前为止，只有4椭圆训练机已被研究，并没有量化的上肢运动的贡献。虽然椭圆机最好的模拟矢状面步行运动学，肌电图分析未能确定一个明确的上级设备。这项研究提供了基于证据的数据，以帮助指导临床决策有关使用椭圆训练机在整个医疗保健连续体和进入社区。
Background. People with physical disabilities often face barriers to regaining walking ability and fitness after discharge from rehabilitation. Physical therapists are uniquely positioned to teach clients the knowledge and skills needed to exercise on functionally relevant equipment available in the community, such its elliptical trainers. However, therapeutic use is hindered by a lack of empirical information.Objective. The purpose of this study wits to examine joint kinematics and muscle activation recorded during walking and elliptical training to provide evidence-based data to guide clinical decision making.Design. This was it prospective, controlled laboratory study using a repeated-measures design.Methods. Twenty adults free from impairments that might hinder gait participated. After familiarization procedures, subjects walked and trained on 4 elliptical devices while kinematic, electromyographic (EMG), and stride characteristic data were recorded.Results. Movement similarities between elliptical training and walking were supported by the documentation of relatively high coefficients of multiple correlation for the hip (.85-.89), thigh (.92-.94), knee (.87-.89) and, to it lesser extent, the ankle (.57-.71). Significantly greater flexion wits documented,it the trunk, pelvis, hip, and knee during elliptical training than during walking. One of the elliptical trainers most closely simulated sagittal-plane walking kinematics, as determined from in assessment of key variables. During elliptical training, gluteus maximus and vastus lateralis Muscle activation were increased; medial hamstring, gastrocnemius, soleus, and tibialis anterior muscle activation were decreased; and gluteus medius and lateral hamstring Muscle activation were relatively unchanged compared with Muscle activation of those Muscles in walking. On the basis of EMG findings, no elliptical trainer clearly emerged as the best for Simulating gait.Limitations. To date, only 4 elliptical trainers have been studied, and the contributions of the upper extremities to movement have not been quantified.Conclusions. Although one of the elliptical trainers best simulated sagittal-plane walking kinematics, EMG analysis failed to identify one clearly superior device. This research provides evidence-based data to help guide clinical decision making related to the use of elliptical trainers across the health care continuum and into the community.